diff --git a/mappings/net/minecraft/world/CommandBlockExecutor.mapping b/mappings/net/minecraft/world/CommandBlockExecutor.mapping
index 3019727f8c..783daa349e 100644
--- a/mappings/net/minecraft/world/CommandBlockExecutor.mapping
+++ b/mappings/net/minecraft/world/CommandBlockExecutor.mapping
@@ -1,4 +1,5 @@
 CLASS net/minecraft/class_1918 net/minecraft/world/CommandBlockExecutor
+	FIELD field_21515 DEFAULT_NAME Lnet/minecraft/class_2561;
 	FIELD field_9162 customName Lnet/minecraft/class_2561;
 	FIELD field_9163 successCount I
 	FIELD field_9164 trackOutput Z
@@ -8,12 +9,14 @@ CLASS net/minecraft/class_1918 net/minecraft/world/CommandBlockExecutor
 	FIELD field_9168 command Ljava/lang/String;
 	FIELD field_9169 DATE_FORMAT Ljava/text/SimpleDateFormat;
 	METHOD method_8286 setCommand (Ljava/lang/String;)V
+		ARG 1 command
 	METHOD method_8287 shouldTrackOutput (Z)V
 		ARG 1 trackOutput
 	METHOD method_8288 interact (Lnet/minecraft/class_1657;)Z
 		ARG 1 player
 	METHOD method_8289 getCommand ()Ljava/lang/String;
 	METHOD method_8290 setCustomName (Lnet/minecraft/class_2561;)V
+		ARG 1 name
 	METHOD method_8291 setLastOutput (Lnet/minecraft/class_2561;)V
 		ARG 1 lastOutput
 	METHOD method_8292 getLastOutput ()Lnet/minecraft/class_2561;
@@ -21,11 +24,14 @@ CLASS net/minecraft/class_1918 net/minecraft/world/CommandBlockExecutor
 	METHOD method_8295 markDirty ()V
 	METHOD method_8296 isTrackingOutput ()Z
 	METHOD method_8297 serialize (Lnet/minecraft/class_2487;)Lnet/minecraft/class_2487;
+		ARG 1 tag
 	METHOD method_8298 setSuccessCount (I)V
 		ARG 1 successCount
 	METHOD method_8299 getCustomName ()Lnet/minecraft/class_2561;
 	METHOD method_8300 getPos ()Lnet/minecraft/class_243;
 	METHOD method_8301 execute (Lnet/minecraft/class_1937;)Z
+		ARG 1 world
 	METHOD method_8303 getSource ()Lnet/minecraft/class_2168;
 	METHOD method_8304 getSuccessCount ()I
 	METHOD method_8305 deserialize (Lnet/minecraft/class_2487;)V
+		ARG 1 tag